Means for making and repairing roads and like surfaces



J. HINES uE-Aus FORIAKING AND REPAIRING ROADS AND LIKE sunnczs FiledSept. 5, 1925 2 Sheets-Sheetl Inventor:

May 4 1926. v 1,583,152

J. HINES MEANS FOR MAKING AND REPAIRING ROADS AND LIKE SURFACES FiledSept. 5 1925 2 Sheets-Sheet 2 FIG. 3:.

m m a 0 n Q 1 .Q. I?

Patented May 4, 1926.

UNITED STATES PATENT OFFICE.

JOHN HINES, or LONDON, ENGLAND.

MEANS FOR MAKING AND REPAIRING ROADS AND LIKE SURFACES.

Application filed September 5, 1925. Serial No. 54,615.

To all whom it maij concem: i v

Be it known that 1, JOHN HINES, a subject of the King of Great Britain,of 4 Princes Mansions, 70 Victoria Street, Lon

don, S. W. 1, England, have invented certain new and useful Improvementsin Means for I Making and Repairing Roads andlike Surfaces, of which thefollowing is a specification. 7

This invention relates to improvements in means for making and repairingroads and like surfaces, and has for its object to overcome thedisadvantages inherent to the use of an ordinary roller for rolling asurface layer ofheated tar or bitumen, and more particularly cold tarmacadam, on to a road surface.

The ordinary roller as at present usedis at atmospheric temperaturewhich in winter around the outer surface of the roller so that theroller and the road surface are heated simultaneously, and a lasting andhomogeneous surface layer is produced on the road.

By way of example one practical form of my invention has beenillustrated in the accompanying drawings in which Figure 1 is a sideelevation of the complete machine.

Figure 2 is a plan.

Figure 3, a transverse section on an enlarged scale through the axis ofthe roller.

In the form illustrated the machine embodying my invention consistsessentially of a steam or other wagon similar in construction to anordinary road roller, but having its main chassis members a considerablyextended to the rear to support the furnace b and roller 0 which takesthe place of the usual rear wheels of the roller.

The front of the machine may be supported by a pair of wheels 61 asshown arranged to swivel about an axis e and controlled through asegment 7 and worm g from a steering wheel h in the usual manner.

' Alternatively the wheels d may be replaced by a rollerlas. in theknown type of machine,v as this enables the machine to be steered moreeasily and used right up to the edge of a road. Also any chilling effectof the front roller on the road surface is immaterial when'it isfollowed by the thorough heating of the surface as described below. I

The roller 0 is mounted in bearings on the side members a of theychassis and is driven by chain from the engine counter shaftv 7c, theusual tensioning means Z being J provided for adjusting" the tension ofthe driving chain. v f p The roller is wholly, enclosed'within a sheetmetal casingym mounted on the rear end of the chassis and forming a hoodwhich extends downwardly practically to the road surface, the loweredges of the hood being formed by hinged flaps n which can be raised upfor travelling or to control the es-j cape of hot air and gases,andevaporated moisture from the road surface. 'Within the hood behindthe roller'is the furnace 0 fed through a door at one side andthe hoodabove the furnace iscurved upwardly and forwardly as shown at p to,provide a chamber inWhich combustion of the fuel is completed andtoinduce a natural flow of the heated air and gases. The front part ofthe curved top of the hood and the part above the roller are preferablylagged asshown at 0 to minimize loss of heat.

A powerful fan g is moun end of the hood and is driven by a smallhigh-speed engine 1" mounted above the roller. Where the roller is steamdriven this engine may conveniently be a steam engine supplied withsteam from the main boiler. I. 1

The fan delivers a large volume of air into the furnace, above and belowthe bars in proportions controlled by a damper or dampers, and thus amixture of heated air .and products of combustion is caused to passdownwardly over and around the roller and onto the road surface escapingbeneath the hinged flaps n. A baffle s at the front side of the furnaceprevents the air from sweeping straight across the furnace, and furtherbaffles 25, t, located at suitable points ensure an even distribution ofthe/hot air and gases over the road surface below the hood.

To prevent the tar or bitumen from adted at the rear' hering to thesurface of the roller, means may be arr. nged for spraying Water orsteam under pressure on to the surface preferably at or near the bottomthereof.

to the surface a spring pressed scraper may be arranged at a suitablepoint in engagement with or closely adjacent to the roller surface.

The roller is maintained at a high temperature by the'large volume ofhotair and gases passing over it and the pressure of the heated roller onthe road surface, together with the simultaneous heating of the roadsurface, both 'beforeand behind the roller,

ensures complete homogeneity of the surface and enables satisfactorywork to be done under any weather conditions. I

If desired one or more idle rollers parallel to the roller 0 may bearranged in front of or behind the roller 0 to distribute the load, thehood being suitably extended, but for ordinary road work these are notessential.

When the roller is standing idle during any temporary suspension ofoperations there. is a danger that the roller by melting the tar orbitumen might sink into the road surface and there is preferably carriedon the machine a steel or other plate of sub-- stantial dimensions whichis adapted to be placed on the road surface beneath the roller undersuch circumstances.

1. A road making and repairing machine, comprising in combination arunning frame, a roller, means on said running frame for generating acurrent of hot air and gases, and means for directing said current on tosaid roller and 011 to the road surface adjacent to, said roller.

2. A road making and repairing machine, comprising in combination arunning frame, a roller, means on said running frame for generating acurrent of hot air and gases, a hood enclosing the said roller andhaving its lower edge closely adj acent to the road surface, and meansfor directing said current of hot air and gases lnto said hood.

8. A road making and repairing machine,

7 comprising in combination a running frame, Also to prevent stonesorgrit adhering a. roller, means on said running frame'for generating acurrent of hot air and gases, a hood enclosing the said roller, hingedflaps forming the lower parts of the sides of said hood and terminatingclosely adjacent to the road surface, and means for directing saidcurrent of hot air and gases into said hood.

4. A road making and repairing machine comprising in combination arunning frame, a roller, means on said running frame for generating acurrent of'hot air and gases, ahood enclosing said roller and having itslower edge closely. adjacent to the road surface, means for directingsaid current of hot air and gases into said hood, and baffies locatedwithin said hood to distribute the hot air and gases evenly therein.

5. A road making and repairing machine, comprising in combination arunningframe,

a power-driven roller supporting one end of said running frame, a hoodenclosing said roller and extending downwardly towards the road surface,a furnace and powerdriven draught-producing means on said frame, saidpower-driven'means creating a draught through said furnace, and meansfor directing hot air and. gases from said furnace into said hood.

6. A road making and repairing machine,

comprising in combination a running frame,

a power-driven roller supporting one end of said frame, a furnacemounted on said frame, a curved upper part to said furnace leading to ahood enclosing said roller, a power-driven fan forcing air through saidfurnace and into said hood, and hinged flaps forming the lower parts ofthe sides of said hood and terminating closely adjacent to the roadsurface.

In testimony whereof I affix my signature.

7 JOHN HINES.

